QAbstractListModel get method

[MartinD]

Hello,
I implemented templated QAbstractListModel with get method which I want to be accessible from QML:

template <class T> class ListModel : public QAbstractListModel
{
// ...
public:
    Q_INVOKABLE T *get(int index) {
        return m_objects[index];
    }
// ...
private:
    QList<T *> m_objects;
// ...
}

I instantiate a list in C++, register it, expose it and use it in QML:

Q_PROPERTY(ListModel<MyData> *myDataList READ myDataList CONSTANT)
  ListModel<MyData> *myDataList (void) {
    return &m_dataList;
  }
ListModel<MyData> m_dataList;
Q_DECLARE_METATYPE(ListModel<MyData>*)
qRegisterMetaType<ListModel<MyData>*>();
qmlRegisterType<ListModel<MyData>>("xyz", 1, 0, "ListModelMyData");

However, when I call in QML:

myDataList .get(0)

I get:

qrc:/MyComponent.qml:1: TypeError: Property 'get' of object QAbstractListModel(0xc26748) is not a function

Can you please help?

[raven-worx]

@MartinD said in QAbstractListModel get method:

template <class T> class ListModel : public QAbstractListModel
{
// ...
public:

did you maybe miss the Q_OBJECT macro?

[MartinD]

@raven-worx said in QAbstractListModel get method:

Q_OBJECT

Yes, I missed that. But it seems there is another problem - template classes don't support Q_OBJECT. I think some workaround will be needed...

[mrjj]

@MartinD
Hi
I dont think template classes and the moc tool can ever work.
There was talk about it on mailing lists
http://lists.qt-project.org/pipermail/interest/2016-February/021029.html
(Thanks to mr @kshegunov )
But it seems that the code changes to allow it was never integrated/moved along.